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DATE: 06/29/2006                         COMPTROLLER OF PUBLIC ACCOUNTS - PROPERTY TAX DIVISION                         PAGE:      1
TIME: 10:38:23                                       2005 CONFIDENCE INTERVAL DETAIL                                    REPT: PTS428
                                                              030/Callahan                                              VRSN:      W
                                                        030-903/Baird ISD
____________________________________________________________________________________________________________________________________
    (1)           (1)                (1)              (1)                (1)              (2)            (3)
 # STRATUM     CATEGORY          LOCAL VALUE     STRATUM RATIO       STATE VALUE     SAMPLE SIZE    TOTAL PARCELS   STRATUM VARIANCE
 _________     ________          ___________     _____________       ___________     ___________    _____________   ________________

      1           A                5,868,101        0.9791             5,993,362              11              286         .003860341
      2           A                5,886,621        0.9272             6,348,815              12              161         .006289910
      3           A                5,835,208        0.9407             6,203,049              11              103         .003425350
      4           A                5,829,225        0.9748             5,979,919              10               56         .000906270
      5           D3              21,197,098        1.0264            20,651,888              36            2,376         .039605770
      6           F1               1,374,649        0.9783             1,405,141               8               70         .000497591
      7           F1               1,354,893        0.9697             1,397,229               5               19         .000785832
      8           F1               1,575,251        0.9773             1,611,840               3                6         .000213584
      9           L1                 709,199        0.9702               730,982               6               31         .001829693
     10           L1                 736,569        0.9619               765,744               5               10         .001439873
     11           L1                 804,711        0.9739               826,277               5                6         .000768727
  RANDOM TOTALS:                  51,171,525                          51,914,246             112            3,124
  CATG J  EXCEPTION VALUES:       10,799,150                          12,925,579
  CATG D1 EXCEPTION VALUES:       10,982,634                          10,099,041
  CATG F1 EXCEPTION VALUES:        1,300,240                           1,347,206
  CATG L1 EXCEPTION VALUES:          298,170                             313,579
 TOTAL TEST VALUES (4):           74,551,719                          76,599,651
 MARGIN OF ERROR PERCENT:          5.0000006
 MARGIN OF ERROR VALUE:            3,829,983
 CONFIDENCE INTERVAL VALUES (5):
   STATE LOWER LIMIT:             72,769,668 (STATE TEST VALUE MINUS MARGIN OF ERROR PERCENT)
   LOCAL TEST VALUE:              74,551,719 (WITHIN CONFIDENCE INTERVAL)
   STATE UPPER LIMIT:             80,429,634 (STATE TEST VALUE PLUS MARGIN OF ERROR PERCENT)
 VALUE ASSIGNED (6):              78,653,083 (SEE ISD SUMMARY WORKSHEET)

 SOURCES:
 (1) SEE STRATIFIED CATEGORY WORKSHEET REPORTS PTS236, PTS430
 (2) NUMBER OF PARCELS SAMPLED BY STAFF
 (3) TOTAL CATEGORY PARCELS FROM STRATIFICATION REPORT APPRAISAL ROLL, OR SELF-REPORT
 (4) INCLUDES ANY PARCELS IN A, B, C, D3, F1, G1, G2,OR L1 MARKED AS EXCEPTION PROPERTIES
 (5) UNSTUDIED CATEGORIES AND SUB-CATEGORIES WERE NOT INCLUDED IN THE CONFIDENCE INTERVAL VALUES